2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux Kernel Configuration"
14 select SYS_SUPPORTS_APM_EMULATION
17 select HAVE_KPROBES if (!XIP_KERNEL)
18 select HAVE_KRETPROBES if (HAVE_KPROBES)
19 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
20 select HAVE_GENERIC_DMA_COHERENT
22 The ARM series is a line of low-power-consumption RISC chip designs
23 licensed by ARM Ltd and targeted at embedded applications and
24 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
25 manufactured, but legacy ARM-based PC hardware remains popular in
26 Europe. There is an ARM Linux project with a web page at
27 <http://www.arm.linux.org.uk/>.
32 config SYS_SUPPORTS_APM_EMULATION
43 config GENERIC_CLOCKEVENTS
47 config GENERIC_CLOCKEVENTS_BROADCAST
49 depends on GENERIC_CLOCKEVENTS
50 default y if SMP && !LOCAL_TIMERS
63 The Extended Industry Standard Architecture (EISA) bus was
64 developed as an open alternative to the IBM MicroChannel bus.
66 The EISA bus provided some of the features of the IBM MicroChannel
67 bus while maintaining backward compatibility with cards made for
68 the older ISA bus. The EISA bus saw limited use between 1988 and
69 1995 when it was made obsolete by the PCI bus.
71 Say Y here if you are building a kernel for an EISA-based machine.
81 MicroChannel Architecture is found in some IBM PS/2 machines and
82 laptops. It is a bus system similar to PCI or ISA. See
83 <file:Documentation/mca.txt> (and especially the web page given
84 there) before attempting to build an MCA bus kernel.
86 config GENERIC_HARDIRQS
90 config STACKTRACE_SUPPORT
94 config HAVE_LATENCYTOP_SUPPORT
99 config LOCKDEP_SUPPORT
103 config TRACE_IRQFLAGS_SUPPORT
107 config HARDIRQS_SW_RESEND
111 config GENERIC_IRQ_PROBE
115 config GENERIC_LOCKBREAK
118 depends on SMP && PREEMPT
120 config RWSEM_GENERIC_SPINLOCK
124 config RWSEM_XCHGADD_ALGORITHM
127 config ARCH_HAS_ILOG2_U32
131 config ARCH_HAS_ILOG2_U64
135 config GENERIC_HWEIGHT
139 config GENERIC_CALIBRATE_DELAY
143 config ARCH_MAY_HAVE_PC_FDC
149 config GENERIC_ISA_DMA
158 config GENERIC_HARDIRQS_NO__DO_IRQ
163 config OPROFILE_ARMV6
165 depends on CPU_V6 && !SMP
166 select OPROFILE_ARM11_CORE
168 config OPROFILE_MPCORE
170 depends on CPU_V6 && SMP
171 select OPROFILE_ARM11_CORE
173 config OPROFILE_ARM11_CORE
176 config OPROFILE_ARMV7
178 depends on CPU_V7 && !SMP
185 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
186 default DRAM_BASE if REMAP_VECTORS_TO_RAM
189 The base address of exception vectors.
191 source "init/Kconfig"
193 source "kernel/Kconfig.freezer"
198 prompt "ARM system type"
199 default ARCH_VERSATILE
202 bool "Agilent AAEC-2000 based"
207 This enables support for systems based on the Agilent AAEC-2000
209 config ARCH_INTEGRATOR
210 bool "ARM Ltd. Integrator family"
216 Support for ARM's Integrator platform.
219 bool "ARM Ltd. RealView family"
225 select GENERIC_CLOCKEVENTS
227 This enables support for ARM Ltd RealView boards.
229 config ARCH_VERSATILE
230 bool "ARM Ltd. Versatile family"
237 select GENERIC_CLOCKEVENTS
239 This enables support for ARM Ltd Versatile board.
244 select ARCH_REQUIRE_GPIOLIB
247 This enables support for systems based on the Atmel AT91RM9200,
248 AT91SAM9 and AT91CAP9 processors.
251 bool "Cirrus Logic CLPS711x/EP721x-based"
254 Support for Cirrus Logic 711x/721x based boards.
262 This is an evaluation board for the StrongARM processor available
263 from Digital. It has limited hardware on-board, including an
264 Ethernet interface, two PCMCIA sockets, two serial ports and a
275 select ARCH_REQUIRE_GPIOLIB
277 This enables support for the Cirrus EP93xx series of CPUs.
279 config ARCH_FOOTBRIDGE
284 Support for systems based on the DC21285 companion chip
285 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
288 bool "Hilscher NetX based"
291 select GENERIC_CLOCKEVENTS
294 This enables support for systems based on the Hilscher NetX Soc
297 bool "Hynix HMS720x-based"
301 This enables support for systems based on the Hynix HMS720x
308 select GENERIC_CLOCKEVENTS
310 Support for Motorola's i.MX family of processors (MX1, MXL).
318 select ARCH_SUPPORTS_MSI
321 Support for Intel's IOP13XX (XScale) family of processors.
330 select ARCH_REQUIRE_GPIOLIB
332 Support for Intel's 80219 and IOP32X (XScale) family of
342 select ARCH_REQUIRE_GPIOLIB
344 Support for Intel's IOP33X (XScale) family of processors.
352 Support for Intel's IXP23xx (XScale) family of processors.
355 bool "IXP2400/2800-based"
360 Support for Intel's IXP2400/2800 (XScale) family of processors.
368 select GENERIC_CLOCKEVENTS
369 select DMABOUNCE if PCI
371 Support for Intel's IXP4XX (XScale) family of processors.
378 Say Y here if you intend to run this kernel on a LinkUp Systems
379 L7200 Software Development Board which uses an ARM720T processor.
380 Information on this board can be obtained at:
382 <http://www.linkupsys.com/>
384 If you have any questions or comments about the Linux kernel port
385 to this board, send e-mail to <sjhill@cotw.com>.
388 bool "Marvell Kirkwood"
393 select GENERIC_CLOCKEVENTS
396 Support for the following Marvell Kirkwood series SoCs:
397 88F6180, 88F6192 and 88F6281.
400 bool "Micrel/Kendin KS8695"
403 select ARCH_REQUIRE_GPIOLIB
405 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
406 System-on-Chip devices.
409 bool "NetSilicon NS9xxx"
413 select GENERIC_CLOCKEVENTS
416 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
419 <http://www.digi.com/products/microprocessors/index.jsp>
422 bool "Marvell Loki (88RC8480)"
425 select GENERIC_CLOCKEVENTS
428 Support for the Marvell Loki (88RC8480) SoC.
431 bool "Marvell MV78xx0"
436 select GENERIC_CLOCKEVENTS
439 Support for the following Marvell MV78xx0 series SoCs:
443 bool "Freescale MXC/iMX-based"
445 select GENERIC_CLOCKEVENTS
448 select ARCH_REQUIRE_GPIOLIB
450 Support for Freescale MXC/iMX-based family of processors
459 select GENERIC_CLOCKEVENTS
462 Support for the following Marvell Orion 5x series SoCs:
463 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
464 Orion-2 (5281), Orion-1-90 (6183).
467 bool "Philips Nexperia PNX4008 Mobile"
471 This enables support for Philips PNX4008 mobile platform.
474 bool "PXA2xx/PXA3xx-based"
480 select ARCH_REQUIRE_GPIOLIB
484 select GENERIC_CLOCKEVENTS
488 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
491 bool "Marvell PXA168"
494 select ARCH_REQUIRE_GPIOLIB
498 select GENERIC_CLOCKEVENTS
502 Support for Marvell's PXA168 processor line.
509 select ARCH_MAY_HAVE_PC_FDC
510 select HAVE_PATA_PLATFORM
513 select ARCH_SPARSEMEM_ENABLE
515 On the Acorn Risc-PC, Linux can support the internal IDE disk and
516 CD-ROM interface, serial and parallel port, and the floppy drive.
522 select ARCH_SPARSEMEM_ENABLE
526 select GENERIC_CLOCKEVENTS
529 select ARCH_REQUIRE_GPIOLIB
531 Support for StrongARM 11x0 based boards.
534 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
538 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
539 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
540 the Samsung SMDK2410 development board (and derivatives).
543 bool "Samsung S3C64XX"
547 Samsung S3C64XX series based systems
557 Support for the StrongARM based Digital DNARD machine, also known
558 as "Shark" (<http://www.shark-linux.de/shark.html>).
563 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
564 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
566 Say Y here for systems based on one of the Sharp LH7A40X
567 System on a Chip processors. These CPUs include an ARM922T
568 core with a wide array of integrated devices for
569 hand-held and low-power applications.
575 select GENERIC_CLOCKEVENTS
577 select ARCH_REQUIRE_GPIOLIB
581 Support for TI's DaVinci platform.
587 select ARCH_REQUIRE_GPIOLIB
589 select GENERIC_CLOCKEVENTS
591 Support for TI's OMAP platform (OMAP1 and OMAP2).
597 select GENERIC_CLOCKEVENTS
599 Support for Qualcomm MSM7K based systems. This runs on the ARM11
600 apps processor of the MSM7K and depends on a shared memory
601 interface to the ARM9 modem processor which runs the baseband stack
602 and controls some vital subsystems (clock and power control, etc).
605 bool "Nuvoton W90X900 CPU"
608 Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
609 can login www.mcuos.com or www.nuvoton.com to know more.
613 source "arch/arm/mach-clps711x/Kconfig"
615 source "arch/arm/mach-ep93xx/Kconfig"
617 source "arch/arm/mach-footbridge/Kconfig"
619 source "arch/arm/mach-integrator/Kconfig"
621 source "arch/arm/mach-iop32x/Kconfig"
623 source "arch/arm/mach-iop33x/Kconfig"
625 source "arch/arm/mach-iop13xx/Kconfig"
627 source "arch/arm/mach-ixp4xx/Kconfig"
629 source "arch/arm/mach-ixp2000/Kconfig"
631 source "arch/arm/mach-ixp23xx/Kconfig"
633 source "arch/arm/mach-loki/Kconfig"
635 source "arch/arm/mach-mv78xx0/Kconfig"
637 source "arch/arm/mach-pxa/Kconfig"
638 source "arch/arm/plat-pxa/Kconfig"
640 source "arch/arm/mach-mmp/Kconfig"
642 source "arch/arm/mach-sa1100/Kconfig"
644 source "arch/arm/plat-omap/Kconfig"
646 source "arch/arm/mach-omap1/Kconfig"
648 source "arch/arm/mach-omap2/Kconfig"
650 source "arch/arm/mach-orion5x/Kconfig"
652 source "arch/arm/mach-kirkwood/Kconfig"
654 source "arch/arm/plat-s3c24xx/Kconfig"
655 source "arch/arm/plat-s3c64xx/Kconfig"
656 source "arch/arm/plat-s3c/Kconfig"
659 source "arch/arm/mach-s3c2400/Kconfig"
660 source "arch/arm/mach-s3c2410/Kconfig"
661 source "arch/arm/mach-s3c2412/Kconfig"
662 source "arch/arm/mach-s3c2440/Kconfig"
663 source "arch/arm/mach-s3c2442/Kconfig"
664 source "arch/arm/mach-s3c2443/Kconfig"
668 source "arch/arm/mach-s3c6400/Kconfig"
669 source "arch/arm/mach-s3c6410/Kconfig"
672 source "arch/arm/mach-lh7a40x/Kconfig"
674 source "arch/arm/mach-imx/Kconfig"
676 source "arch/arm/mach-h720x/Kconfig"
678 source "arch/arm/mach-versatile/Kconfig"
680 source "arch/arm/mach-aaec2000/Kconfig"
682 source "arch/arm/mach-realview/Kconfig"
684 source "arch/arm/mach-at91/Kconfig"
686 source "arch/arm/plat-mxc/Kconfig"
688 source "arch/arm/mach-netx/Kconfig"
690 source "arch/arm/mach-ns9xxx/Kconfig"
692 source "arch/arm/mach-davinci/Kconfig"
694 source "arch/arm/mach-ks8695/Kconfig"
696 source "arch/arm/mach-msm/Kconfig"
698 source "arch/arm/mach-w90x900/Kconfig"
700 # Definitions to make life easier
713 source arch/arm/mm/Kconfig
716 bool "Enable iWMMXt support"
717 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
718 default y if PXA27x || PXA3xx || ARCH_MMP
720 Enable support for iWMMXt context switching at run time if
721 running on a CPU that supports it.
723 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
726 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
730 source "arch/arm/Kconfig-nommu"
735 source "arch/arm/common/Kconfig"
737 config FORCE_MAX_ZONEORDER
750 Find out whether you have ISA slots on your motherboard. ISA is the
751 name of a bus system, i.e. the way the CPU talks to the other stuff
752 inside your box. Other bus systems are PCI, EISA, MicroChannel
753 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
754 newer boards don't support it. If you have ISA, say Y, otherwise N.
756 # Select ISA DMA controller support
761 # Select ISA DMA interface
766 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
768 Find out whether you have a PCI motherboard. PCI is the name of a
769 bus system, i.e. the way the CPU talks to the other stuff inside
770 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
771 VESA. If you have PCI, say Y, otherwise N.
776 # Select the host bridge type
777 config PCI_HOST_VIA82C505
779 depends on PCI && ARCH_SHARK
782 config PCI_HOST_ITE8152
784 depends on PCI && MACH_ARMCORE
788 source "drivers/pci/Kconfig"
790 source "drivers/pcmcia/Kconfig"
794 menu "Kernel Features"
796 source "kernel/time/Kconfig"
799 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
800 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
801 select USE_GENERIC_SMP_HELPERS
803 This enables support for systems with more than one CPU. If you have
804 a system with only one CPU, like most personal computers, say N. If
805 you have a system with more than one CPU, say Y.
807 If you say N here, the kernel will run on single and multiprocessor
808 machines, but will use only one CPU of a multiprocessor machine. If
809 you say Y here, the kernel will run on many, but not all, single
810 processor machines. On a single processor machine, the kernel will
811 run faster if you say N here.
813 See also <file:Documentation/i386/IO-APIC.txt>,
814 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
815 <http://www.linuxdoc.org/docs.html#howto>.
817 If you don't know what to do here, say N.
820 prompt "Memory split"
823 Select the desired split between kernel and user memory.
825 If you are not absolutely sure what you are doing, leave this
829 bool "3G/1G user/kernel split"
831 bool "2G/2G user/kernel split"
833 bool "1G/3G user/kernel split"
838 default 0x40000000 if VMSPLIT_1G
839 default 0x80000000 if VMSPLIT_2G
843 int "Maximum number of CPUs (2-32)"
849 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
850 depends on SMP && HOTPLUG && EXPERIMENTAL
852 Say Y here to experiment with turning CPUs off and on. CPUs
853 can be controlled through /sys/devices/system/cpu.
856 bool "Use local timer interrupts"
857 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || REALVIEW_EB_A9MP)
860 Enable support for local timers on SMP platforms, rather then the
861 legacy IPI broadcast method. Local timers allows the system
862 accounting to be spread across the timer interval, preventing a
863 "thundering herd" at every timer tick.
866 bool "Preemptible Kernel (EXPERIMENTAL)"
867 depends on EXPERIMENTAL
869 This option reduces the latency of the kernel when reacting to
870 real-time or interactive events by allowing a low priority process to
871 be preempted even if it is in kernel mode executing a system call.
872 This allows applications to run more reliably even when the system is
875 Say Y here if you are building a kernel for a desktop, embedded
876 or real-time system. Say N if you are unsure.
880 default 128 if ARCH_L7200
881 default 200 if ARCH_EBSA110 || ARCH_S3C2410
882 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
883 default AT91_TIMER_HZ if ARCH_AT91
887 bool "Use the ARM EABI to compile the kernel"
889 This option allows for the kernel to be compiled using the latest
890 ARM ABI (aka EABI). This is only useful if you are using a user
891 space environment that is also compiled with EABI.
893 Since there are major incompatibilities between the legacy ABI and
894 EABI, especially with regard to structure member alignment, this
895 option also changes the kernel syscall calling convention to
896 disambiguate both ABIs and allow for backward compatibility support
897 (selected with CONFIG_OABI_COMPAT).
899 To use this you need GCC version 4.0.0 or later.
902 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
903 depends on AEABI && EXPERIMENTAL
906 This option preserves the old syscall interface along with the
907 new (ARM EABI) one. It also provides a compatibility layer to
908 intercept syscalls that have structure arguments which layout
909 in memory differs between the legacy ABI and the new ARM EABI
910 (only for non "thumb" binaries). This option adds a tiny
911 overhead to all syscalls and produces a slightly larger kernel.
912 If you know you'll be using only pure EABI user space then you
913 can say N here. If this option is not selected and you attempt
914 to execute a legacy ABI binary then the result will be
915 UNPREDICTABLE (in fact it can be predicted that it won't work
916 at all). If in doubt say Y.
918 config ARCH_FLATMEM_HAS_HOLES
923 # Discontigmem is deprecated
924 config ARCH_DISCONTIGMEM_ENABLE
927 config ARCH_SPARSEMEM_ENABLE
930 config ARCH_SPARSEMEM_DEFAULT
931 def_bool ARCH_SPARSEMEM_ENABLE
933 config ARCH_SELECT_MEMORY_MODEL
934 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
938 default "4" if ARCH_LH7A40X
940 depends on NEED_MULTIPLE_NODES
945 bool "Timer and CPU usage LEDs"
946 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
947 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
948 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
949 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
950 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
951 ARCH_AT91 || ARCH_DAVINCI || \
952 ARCH_KS8695 || MACH_RD88F5182
954 If you say Y here, the LEDs on your machine will be used
955 to provide useful information about your current system status.
957 If you are compiling a kernel for a NetWinder or EBSA-285, you will
958 be able to select which LEDs are active using the options below. If
959 you are compiling a kernel for the EBSA-110 or the LART however, the
960 red LED will simply flash regularly to indicate that the system is
961 still functional. It is safe to say Y here if you have a CATS
962 system, but the driver will do nothing.
965 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
966 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
967 || MACH_OMAP_PERSEUS2
969 depends on !GENERIC_CLOCKEVENTS
970 default y if ARCH_EBSA110
972 If you say Y here, one of the system LEDs (the green one on the
973 NetWinder, the amber one on the EBSA285, or the red one on the LART)
974 will flash regularly to indicate that the system is still
975 operational. This is mainly useful to kernel hackers who are
976 debugging unstable kernels.
978 The LART uses the same LED for both Timer LED and CPU usage LED
979 functions. You may choose to use both, but the Timer LED function
980 will overrule the CPU usage LED.
983 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
985 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
986 || MACH_OMAP_PERSEUS2
989 If you say Y here, the red LED will be used to give a good real
990 time indication of CPU usage, by lighting whenever the idle task
991 is not currently executing.
993 The LART uses the same LED for both Timer LED and CPU usage LED
994 functions. You may choose to use both, but the Timer LED function
995 will overrule the CPU usage LED.
997 config ALIGNMENT_TRAP
999 depends on CPU_CP15_MMU
1000 default y if !ARCH_EBSA110
1002 ARM processors cannot fetch/store information which is not
1003 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1004 address divisible by 4. On 32-bit ARM processors, these non-aligned
1005 fetch/store instructions will be emulated in software if you say
1006 here, which has a severe performance impact. This is necessary for
1007 correct operation of some network protocols. With an IP-only
1008 configuration it is safe to say N, otherwise say Y.
1014 # Compressed boot loader in ROM. Yes, we really want to ask about
1015 # TEXT and BSS so we preserve their values in the config files.
1016 config ZBOOT_ROM_TEXT
1017 hex "Compressed ROM boot loader base address"
1020 The physical address at which the ROM-able zImage is to be
1021 placed in the target. Platforms which normally make use of
1022 ROM-able zImage formats normally set this to a suitable
1023 value in their defconfig file.
1025 If ZBOOT_ROM is not enabled, this has no effect.
1027 config ZBOOT_ROM_BSS
1028 hex "Compressed ROM boot loader BSS address"
1031 The base address of an area of read/write memory in the target
1032 for the ROM-able zImage which must be available while the
1033 decompressor is running. It must be large enough to hold the
1034 entire decompressed kernel plus an additional 128 KiB.
1035 Platforms which normally make use of ROM-able zImage formats
1036 normally set this to a suitable value in their defconfig file.
1038 If ZBOOT_ROM is not enabled, this has no effect.
1041 bool "Compressed boot loader in ROM/flash"
1042 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1044 Say Y here if you intend to execute your compressed kernel image
1045 (zImage) directly from ROM or flash. If unsure, say N.
1048 string "Default kernel command string"
1051 On some architectures (EBSA110 and CATS), there is currently no way
1052 for the boot loader to pass arguments to the kernel. For these
1053 architectures, you should supply some command-line options at build
1054 time by entering them here. As a minimum, you should specify the
1055 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1058 bool "Kernel Execute-In-Place from ROM"
1059 depends on !ZBOOT_ROM
1061 Execute-In-Place allows the kernel to run from non-volatile storage
1062 directly addressable by the CPU, such as NOR flash. This saves RAM
1063 space since the text section of the kernel is not loaded from flash
1064 to RAM. Read-write sections, such as the data section and stack,
1065 are still copied to RAM. The XIP kernel is not compressed since
1066 it has to run directly from flash, so it will take more space to
1067 store it. The flash address used to link the kernel object files,
1068 and for storing it, is configuration dependent. Therefore, if you
1069 say Y here, you must know the proper physical address where to
1070 store the kernel image depending on your own flash memory usage.
1072 Also note that the make target becomes "make xipImage" rather than
1073 "make zImage" or "make Image". The final kernel binary to put in
1074 ROM memory will be arch/arm/boot/xipImage.
1078 config XIP_PHYS_ADDR
1079 hex "XIP Kernel Physical Location"
1080 depends on XIP_KERNEL
1081 default "0x00080000"
1083 This is the physical address in your flash memory the kernel will
1084 be linked for and stored to. This address is dependent on your
1088 bool "Kexec system call (EXPERIMENTAL)"
1089 depends on EXPERIMENTAL
1091 kexec is a system call that implements the ability to shutdown your
1092 current kernel, and to start another kernel. It is like a reboot
1093 but it is independent of the system firmware. And like a reboot
1094 you can start any kernel with it, not just Linux.
1096 It is an ongoing process to be certain the hardware in a machine
1097 is properly shutdown, so do not be surprised if this code does not
1098 initially work for you. It may help to enable device hotplugging
1102 bool "Export atags in procfs"
1106 Should the atags used to boot the kernel be exported in an "atags"
1107 file in procfs. Useful with kexec.
1111 menu "CPU Power Management"
1113 if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1115 source "drivers/cpufreq/Kconfig"
1117 config CPU_FREQ_SA1100
1119 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1122 config CPU_FREQ_SA1110
1124 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1127 config CPU_FREQ_INTEGRATOR
1128 tristate "CPUfreq driver for ARM Integrator CPUs"
1129 depends on ARCH_INTEGRATOR && CPU_FREQ
1132 This enables the CPUfreq driver for ARM Integrator CPUs.
1134 For details, take a look at <file:Documentation/cpu-freq>.
1139 tristate "CPUfreq driver for i.MX CPUs"
1140 depends on ARCH_IMX && CPU_FREQ
1143 This enables the CPUfreq driver for i.MX CPUs.
1149 depends on CPU_FREQ && ARCH_PXA && PXA25x
1151 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1155 source "drivers/cpuidle/Kconfig"
1159 menu "Floating point emulation"
1161 comment "At least one emulation must be selected"
1164 bool "NWFPE math emulation"
1165 depends on !AEABI || OABI_COMPAT
1167 Say Y to include the NWFPE floating point emulator in the kernel.
1168 This is necessary to run most binaries. Linux does not currently
1169 support floating point hardware so you need to say Y here even if
1170 your machine has an FPA or floating point co-processor podule.
1172 You may say N here if you are going to load the Acorn FPEmulator
1173 early in the bootup.
1176 bool "Support extended precision"
1177 depends on FPE_NWFPE
1179 Say Y to include 80-bit support in the kernel floating-point
1180 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1181 Note that gcc does not generate 80-bit operations by default,
1182 so in most cases this option only enlarges the size of the
1183 floating point emulator without any good reason.
1185 You almost surely want to say N here.
1188 bool "FastFPE math emulation (EXPERIMENTAL)"
1189 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1191 Say Y here to include the FAST floating point emulator in the kernel.
1192 This is an experimental much faster emulator which now also has full
1193 precision for the mantissa. It does not support any exceptions.
1194 It is very simple, and approximately 3-6 times faster than NWFPE.
1196 It should be sufficient for most programs. It may be not suitable
1197 for scientific calculations, but you have to check this for yourself.
1198 If you do not feel you need a faster FP emulation you should better
1202 bool "VFP-format floating point maths"
1203 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1205 Say Y to include VFP support code in the kernel. This is needed
1206 if your hardware includes a VFP unit.
1208 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1209 release notes and additional status information.
1211 Say N if your target does not have VFP hardware.
1219 bool "Advanced SIMD (NEON) Extension support"
1220 depends on VFPv3 && CPU_V7
1222 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1227 menu "Userspace binary formats"
1229 source "fs/Kconfig.binfmt"
1232 tristate "RISC OS personality"
1235 Say Y here to include the kernel code necessary if you want to run
1236 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1237 experimental; if this sounds frightening, say N and sleep in peace.
1238 You can also say M here to compile this support as a module (which
1239 will be called arthur).
1243 menu "Power management options"
1245 source "kernel/power/Kconfig"
1247 config ARCH_SUSPEND_POSSIBLE
1252 source "net/Kconfig"
1254 menu "Device Drivers"
1256 source "drivers/base/Kconfig"
1258 source "drivers/connector/Kconfig"
1260 if ALIGNMENT_TRAP || !CPU_CP15_MMU
1261 source "drivers/mtd/Kconfig"
1264 source "drivers/parport/Kconfig"
1266 source "drivers/pnp/Kconfig"
1268 source "drivers/block/Kconfig"
1270 # misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1272 source "drivers/misc/Kconfig"
1274 source "drivers/ide/Kconfig"
1276 source "drivers/scsi/Kconfig"
1278 source "drivers/ata/Kconfig"
1280 source "drivers/md/Kconfig"
1282 source "drivers/message/fusion/Kconfig"
1284 source "drivers/ieee1394/Kconfig"
1286 source "drivers/message/i2o/Kconfig"
1288 source "drivers/net/Kconfig"
1290 source "drivers/isdn/Kconfig"
1292 # input before char - char/joystick depends on it. As does USB.
1294 source "drivers/input/Kconfig"
1296 source "drivers/char/Kconfig"
1298 source "drivers/i2c/Kconfig"
1300 source "drivers/spi/Kconfig"
1302 source "drivers/gpio/Kconfig"
1304 source "drivers/w1/Kconfig"
1306 source "drivers/power/Kconfig"
1308 source "drivers/hwmon/Kconfig"
1310 source "drivers/thermal/Kconfig"
1312 source "drivers/watchdog/Kconfig"
1314 source "drivers/ssb/Kconfig"
1316 #source "drivers/l3/Kconfig"
1318 source "drivers/mfd/Kconfig"
1320 source "drivers/media/Kconfig"
1322 source "drivers/video/Kconfig"
1324 source "sound/Kconfig"
1326 source "drivers/hid/Kconfig"
1328 source "drivers/usb/Kconfig"
1330 source "drivers/uwb/Kconfig"
1332 source "drivers/mmc/Kconfig"
1334 source "drivers/memstick/Kconfig"
1336 source "drivers/accessibility/Kconfig"
1338 source "drivers/leds/Kconfig"
1340 source "drivers/rtc/Kconfig"
1342 source "drivers/dma/Kconfig"
1344 source "drivers/dca/Kconfig"
1346 source "drivers/auxdisplay/Kconfig"
1348 source "drivers/regulator/Kconfig"
1350 source "drivers/uio/Kconfig"
1352 source "drivers/staging/Kconfig"
1358 source "arch/arm/Kconfig.debug"
1360 source "security/Kconfig"
1362 source "crypto/Kconfig"
1364 source "lib/Kconfig"